﻿/*
 *  PAPER    ON   ERVIS  NPAPER ISION  PE  IS ON  PERVI IO  APER  SI  PA
 *  AP  VI  ONPA  RV  IO PA     SI  PA ER  SI NP PE     ON AP  VI ION AP
 *  PERVI  ON  PE VISIO  APER   IONPA  RV  IO PA  RVIS  NP PE  IS ONPAPE
 *  ER     NPAPER IS     PE     ON  PE  ISIO  AP     IO PA ER  SI NP PER
 *  RV     PA  RV SI     ERVISI NP  ER   IO   PE VISIO  AP  VISI  PA  RV3D
 *  ______________________________________________________________________
 *  papervision3d.org  blog.papervision3d.org  osflash.org/papervision3d
 */

/*
 * Copyright 2006 (c) Carlos Ulloa Matesanz, noventaynueve.com.
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

// __________________________________________________________________________ COLOR MATERIAL
package org.papervision3d.materials
{

import flash.geom.Matrix;

import flash.display.Graphics;
	import flash.utils.Dictionary;
	
	import org.papervision3d.core.Number3D;
	import org.papervision3d.core.geom.*;
	import org.papervision3d.core.proto.*;
	import org.papervision3d.core.proto.MaterialObject3D;
	import org.papervision3d.objects.DisplayObject3D;


/**
* The ColorMaterial class creates a solid color material.
*
* Materials collects data about how objects appear when rendered.
*
*/
public class ShadowColorMaterial extends MaterialObject3D
{

	public var light:Number3D;
	public var casts:Array;
	public var depth:Number = 1200;
	// ______________________________________________________________________ NEW

	/**
	* The ColorMaterial class creates a solid color material.
	*
	* @param	asset				A BitmapData object.
	* @param	initObject			[optional] - An object that contains additional properties with which to populate the newly created material.
	*/
	public function ShadowColorMaterial( color:Number=0xFF00FF, alpha:Number = 1, maxdepth:Number = 1200, initObject:Object=null )
	{
		super( initObject );

		this.fillColor = color;
		this.fillAlpha = alpha;
		this.light = new Number3D(0, 0, 0);
		this.depth = maxdepth;
		

	}
	
	
	/**
	 *  drawFace3D
	 */
	override public function drawFace3D(instance:DisplayObject3D,
face3D:Face3D, graphics:Graphics, v0:Vertex2D, v1:Vertex2D, v2:Vertex2D):int
		{
			//face3D.update(instance);
			var color:uint = this.fillColor;
			//trace(face3D.faceNormal);
			var c:DisplayObject3D;
			var g:GeometryObject3D;
			var f:Face3D;
			var dN:Number3D;
			var dd:Number;
			
			var b:Boolean = false;
			var vect:Number3D = new Number3D(face3D.center.x-light.x, face3D.center.y-light.y, face3D.center.z-light.z);
			var alpha = fillAlpha;
			var r:int;
			for(var i:int = 0; c = casts[i];i++){
				
				g = c.geometry;
				for(var j:int =0;f=g.faces[j];j++){
				r = f.hitsLine(light, vect);
					if(r > 0)
					{
						dN = Number3D.sub(f.center, face3D.center);
						dd = 0.2+((1200-Math.sqrt(dN.x*dN.x+dN.y*dN.y+dN.z*dN.z))/1200);
						
						alpha = dd;
						b = true;
						
						break;
					}else{
						
					}
				}

				
			}
			
			var x0:Number = v0.x;
			var y0:Number = v0.y;
			var x1:Number = v1.x;
			var y1:Number = v1.y;
			var x2:Number = v2.x;
			var y2:Number = v2.y;
			
			graphics.beginFill( color, alpha);
			graphics.moveTo( x0, y0 );
			graphics.lineTo( x1, y1 );
			graphics.lineTo( x2, y2 );
			graphics.lineTo( x0, y0 );
			graphics.endFill();
			
			return 1;
		}
		


	
	// ______________________________________________________________________ TO STRING

	/**
	* Returns a string value representing the material properties in the specified ColorMaterial object.
	*
	* @return	A string.
	*/
	public override function toString(): String
	{
		return 'ColorMaterial - color:' + this.fillColor + ' alpha:' + this.fillAlpha;
	}
}
}